Scaffold bracket



w. T. YOSHIMOTO, SR 2,573,086

Oct. 30, I951 SCAFFOLD BRACKET 2 SHEETS-QSHEET 1 Filed July 26, 1949 Q 4w M/ mm a 4 1/ W [1 x W Y 1 v .1. U My W V m B 0 A I W W F/G. z.

Patented Oct. 30, 1951 SOAFFOLD BRACKET Watson T. Yoshimoto, Sn,Honolulu, Territory of Hawaii Application July 26, 1949, SerialNo.106,807

3 Claims.

1 My invention relates to improved scaffold brackets, especially but notexclusively, for use on concrete wall forms, the primary object of theinvention being to provide, in brackets of this kind, means for mountingthebrackets on horizontal Wales of the concrete wall forms in suchmanner thatboth 'sidewise rocking movement and vertical rocking movementof the brackets relative to the forms under service conditions areprecluded, whereby the safety and efficiency of the. resultingscaffolding .is greatly increased.

Another important object of the invention is the provision of scaffoldbrackets of the above indicated character which have relatively greatstrength and rigidity along with light weight and compactness, and whichcan be easily manufactured'in a serviceable and attractive form atrelatively low cost.

Another important object of the invention is to provide scaffoldbrackets of the character indicated above which include means forefficient use of rope or other flexible guard rails, which are safer andmore satisfactory than rigid wood or metal guard rails.

Other important objects and advantageous features of my invention willbe apparent from the following description and accompanying drawings,wherein for present purposes of illustration only, specific embodimentsof the invention are set forth in detail.

In the drawings:

Figure 1 is a fragmentary perspective view showing a single scaffoldbracket applied to a concrete wall form having two :adjacent horizontalwales, with the rope guard rails shown in dotted lines.

Figure 21s a top plan view of a sca fold bracket.

Figure 3 is a side elevation thereof.

.Figure 4 is aside elevation ofa guard rail post.

Figure 5 is afront elevation thereof.

Figure 6 is a view similar to Figure 1. showing another embodiment ofscaffold bracket .for use with a concrete wallform having a single.horizontal Wale.

Figure 7 is a top plan view of the spacer block used with the bracketshown in Figure 6, and

Figure 8 is a side elevation of the spacer'block.

Referring to the drawings in detail, the nu- -meral I I] generallydesignates a concrete wall form side member composed of horizontalplanks or boards H with laterally spaced vertical studs [2 secured tothe outer side thereof, and with vertically spaced horizontal wales I3,l3 secured on the outer edges of the studs, in a generally conventionalarrangement. My novel scafiold 2 bracket, generally designated '15 and"shown in Figures 1 to 5, consists of a generally right triangular formpreferably made of light-weight adequately strong metal tubing with thecomponents fullewel'ded together. The bracket l5 comprises the verticalmember I6, long enough to morethan reach vertically across two adjacenthorizontal wales .!:3, IS, the horizontal member I? long enough toreachfrom a point behind a Wale l3 to the proper distance away from theside of the wall form Hlto support thereonthe desired width of platformforming planks IS. The horizontal member i'i being welded to the upperend'of the vertical member IE5 at a point near the inward end thereof,as indicated at IS. A diagonal brace 20 is welded to the lower part ofthevertical member 55 at 2| and to an duter part of the horizontalmemberI! at 22. Thepost ofthe'vertical member it below th weld 2! is providedwith one or more holes 23. The inward end of the horizontal member i!has welded thereto at 26 a short vertical anchor .element25 and weldedat 2'5 to the outward end of the horizontal member I3 is a verticalguard rail post mounting socket 27. The anchor element 25 andwsocket 2.?and the vertical member l6 are parallel and are preferably .arrangedinthe same vertical plane.

An important feature of the bracket 15 is the inverted horizontal metalchannel 28 which is positioned against the underside of the horizontalmember i! in the space between the vertical member L5 and the dependingpart of the anchor element 25 and. weldedin place, at right angles tothe vertical and horizontal members. The channel 28 extends equally atopposite sides of the horizontal member ll, as shown in Figure 2, and isjust wide enough to .snugly receive the upper wale 1.3 between itsdepending side flanges and 30. with its web 3l resting upon the top ofthe wale: and with the lower part of the vertical member I6 restingagainst the outer face of the subiacent wale l3, as shown in Figure l.The arrangement is such that when the bracket I5 is installed it isself-positioning in the correct oerpend'icular and parallel relationshipto the form The channel web 3! and the side flanges thereof are providedwith holes 32 and 33, respectively. to accommodate preferably duplexhead nails 34 to secure the channel in proper engagement with the upperwale [3. A similar nail may be used in the hole 23 to secure the lowerpart of the vertical member to the face of the subjacent wale l3, ifdesired.

The socket 21 is provided with one or more and securely mounted incorrect position in the socket 21, at different heights. In its mostdepressed position the shoulder 40 at the upper end of the portion 38rests upon the upper end of the socket 21 for additional support.

The upper end of the post 31 has a transversely arranged upstanding loopor eye 41 to accommodate an upper flexible guard rope 42 and a lowerloop or eye 43 is secured on the outward side of the post to accommodatea lower guard rope M, as shown in Figure 1.

The spacer block 50 comprises a, truncated isosceles triangular form offiat uniform width rigid metal bar on strip, having the base side 51thereof indented, as indicated at 52, to provide two feet 53 at the endsthereof. The converging ends of the sides 54, 54 of the triangular formare prolonged in parallelism as indicated at 55, 55 and are rigidlyconnected together by a bridge part 56 containing a hole to accommodatethe assembling bolt 51. The prolongations 55 are spaced to snuglyreceive the lower part of the vertical bracket member [6 therebetween,and the bolt 51 is arranged to pass outwardly through the hole 23 in thevertical member I6a. and receive a wing nut 58 on its outer end to clampthe spacer block on and in proper relation to the bracket l with thefeet 53 engaging flush with the form planks H, as

shown in Figure 6.

It will be understood that as many of the above described brackets asdesired may be used at the desired distances from each other along theconcrete form when erecting or stripping the form.

What I claim is:

l. A scaffold bracket comprising a right triangular frame comprising ahorizontal platform plank supporting member and a vertical memberdepending from said horizontal member at a point spaced from the innerend of said horizontal member, a horizontal inverted channel secured tosaid horizontal member at a point between said vertical member and theinner end of said horizontal member, abutment means on the lower end ofsaid vertical member comprising a spacer block positioned at the inwardside of said vertical member, and means removably securing said spacerblock in place on said vertical member, said spacer block comprising anopen form having laterally spaced prolongations receiving the verticalmember therebetween, a bridge part connecting said prolongations havinga bolt extending therefrom between said prolongations and removablypassing through a hole provided in said vertical member, and a nut onsaid bolt bearing against the outward side of said vertical member andsecuring said 4 spacer block to extend horizontally from said verticalmember.

2. In a scaffold bracket, a, triangular frame comprising a horizontalmember having inner and outer ends, a vertical member depending fromsaid horizontal member at a point spaced from the inner end of thehorizontal member, and a downwardly facing channel member securedcrosswise to the underside of said horizontal member at a point betweenthe inner end of the horizontal member and said vertical member, saidhorizontal member having a vertically extending anchor member on itsinner end, said anchor member having a lower portion depending along theinward side of said channel member, said anchor member having an upperportion rising above said horizontal member and said horizontal memberhaving a vertical element on its outer end rising thereabove, said upperportion of the anchor member and said vertical element serving as innerand outer stops for planks placed upon said horizontal membertherebetween.

3. In a scaffold bracket, a triangular frame comprising a horizontalmember having inner and outer ends, a vertical member depending fromsaid horizontal member at a point spaced from the inner end of thehorizontal member. and a downwardly facing channel member securedcrosswise to the underside of said horizontal member at a point betweenthe inner end of the horizontal member and said vertical member, saidhorizontal member having a vertically extending anchor member on itsinner end, said anchor member having a lower portion depend ing alongthe inward side of said channel member, said anchor member having anupper portion rising above said horizontal member and said horizontalmember having a vertical element on its outer end rising thereabove,said upper portion of the anchor member and said vertical elementserving as inner and outer stops for planks placed upon said horizontalmember therebetween, said vertical element being tubular for receptionof a guard rail post.

WATSON T. YOSI-IIMOTO, SR.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 474,406 Ramsey May 10, 189510,194 Sellers Dec. 5, 1893 740,452 Michael Oct. 6, 1903 1,086,348Bolognesi Feb. 10, 1914 1,449,638 Tresters Mar. 27, 1923 2,261,907Uecker Nov. 4, 1941 2,264,498 Alloway Dec. 2, 1941 2,295,995 Lamb Sept.15, 942 2,302,344 OHara Nov. 17, 1942 2,488,984 Pennington Nov. 22, 1949FOREIGN PATENTS Number Country Date 639,946 France July 2, 19 8

